Which of the following would decrease FSH secretion? a) High levels of GnRH secretion
b) Low levels of androgens
c) High levels of androgens
d) Low levels of estrogen

In the practice of science, this type of reasoning is used to develop explanations.

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?